The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 01, 1977
Filed:
May. 07, 1975
Applicant:
Inventors:
Kazuo Matsui, Fujisawa, JA;
Taichiro Shigematsu, Machida, JA;
Tetsuya Shibahara, Kawasaki, JA;
Makoto Nakazawa, Yokohama, JA;
Assignee:
Mitsubishi Chemical Industries Ltd., Tokyo, JA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
2603 / ; 71 95 ;
Abstract
N-(4-fluorophenyl)-2,3-dichloromaleimide of uniform grain size is produced either by reacting 2,3-dichloromaleic acid, an anhydride or an ester thereof with 4-fluoroaniline in an aqueous medium or by dehydrative-cyclization of either N-(4-fluorophenyl)-2,3-dichloromaleamic acid or 4-fluoroanilinium 2,3-dichloromaleate in an aqueous medium. The N-(4-fluorophenyl)-2,3-dichloromaleimide of uniform grain size provides improved fungicidal activity and is convenient for preparing an agricultural fungicidal composition.